Comment 8 for bug 1173426

Kevin Godby pointed out that in the Ubuntu-docs case, the <kbd></kdb> tag pair, which is inside most, but not all, <span class" key">...<.span> pairs does actually make a box around the key. For whatever reason "$color.gray_background" compiles into #f7f6f5, which is imperceptibly different than white, and also is not as declared in the color.xslt file ("'#f3f3f0'") (which probably is not grey enough anyhow). Once I took a screen shot and pasted it into photoshop and zoomed in (attached), I could finally see what Kevin referred to. This posting is for completeness only, and doesn't change the need to define "span.key" as per my previous posting.